Miss Cooper, who grew up in York, was killed at the couple's home while she was on maternity leave in October last year.

Her body was later found dumped in woodland in West Sussex. A post-mortem examination confirmed death was caused by blunt force trauma to the head and a stab wound to the throat.

Miss Cooper had joined Surrey Police in 2003 and worked in the Public Protection Investigation Unit based at Guildford. During her career she was praised by senior officers for her work and in 2009 was given a commendation by the force for her "professionalism, dedication and commitment".